Building of concrete structures



R. WILSON.

BUILDING OF CONCRETE STRUCTURES.

APPLICATION FILEDJUNE9,1920.

Patent ed Feb, 7, 1922.

UNETED STATES PATENT OFFICE.

, ROBERT WILSON, OF HOBART, TASMANIA, AUSTRALIA.

BUILDING 0F CONCRETE STRUCTURES.

Application filed June 9,

To all whom it may concern Be it known that 1, ROBERT WILSON, a subjeet of the King of Great- Britain, residing at National Mutual Buildings, Macquarie Street, Hobart, in the State of Tasmania, Commonwealth of Australia, have invented certain new and useful Improvements inand Relating to the Building of Concrete Structures, of which the following is a specification. v r

This invention has for its object the provision of means for building concrete structuressuch as foundations of houses, fences or walls either solid or hollow. It further aims at improving and simplifying the work of construction, and provides for the proper support of the operative parts.

According to my invention, a mould is made of metal sheets arran'ged'on angle irons placed upright and slidably held on vertically arranged supports. Means for steady ing the supports, which may consist of poles, are provided of a simple character, and there is an effective cavity box, of simple construc tion, which can be inserted medially within the camera on the reinforcement rods.

But in order to fully understand the inven tion reference is made to the accompanying drawings, in which,

Figure 1 is a perspective View of a mould arranged to receive material for the formation of a hollow wall.

Figure 2 shows a mould plate in side eleva: tion fitted on its respective ends withtongue and groove for the purposeof joining up one length of mould to another. i I

Figure 3 shows the said tongue and groove arrangement in plan view with locking pin in position.

Figure 4: is a plan view of a holdfast or distance piece for steadying the vertical poles.

Figure 5 illustrates a yoke and attached recessed'plate at top.

Figure 6 is a perspective View of cavity boxes, and

Figure 7 boxes.

Figure 8 shows in plan View the angle of a wall and the disposition of the parts in constructing same.

The sheets 9 are composed of stout metal plating and are fitted with angle irons 10 upon which are lugs 11. Upright poles 12 are placed in the ground in lines parallel a filling chute and cap to said Specification of Letters Patent. P t t 7, 1.922

1920. Serial No. 387,643.

with the foundations and the lugs, which are bored with holes to accommodate the poles, are passed over the latter which thus hold the plates 9 vertical.

So that the poles 12 shall be steadied, holdfasts or distance pieces 13 are used. These are provided near each end with an elliptical opening to facilitate the plates being dropped down the poles. These openings may, if de-,

sired, extend to the edge of the plates. To

hold same in position such plate end has a clip '14 pivotally attached and with a semicircular recess therein, of about'the same radius asthe plate, that closes on the pole and pushes same into the inner end of 'theelliptical opening 15 where it is held by the'clip,

each being locked to the piece 13 by a pin in I the holes 25. Thus are the mould plates ,9

held, but in order to further support the same and to avoid the plates bellying under pressure of the wet filling, I provide yokes 16 at intervals along the mould. To the upper part of each yoke may be fastened a plate 17, that is fashioned as shown in Figure 5, with a medial recess and sideways lugs 18 which bear outwardly against the top of the mould plates while the lens of the yoke embrace the same exterior-1y. The yokes bear upon the horizontal ironsattached to the sheets. One leg of each yoke is made slightly longer than the other to facilitate placing the same. in position, it being understood that both legs overlap the lowest horizontal iron 10, but one will overlap further than the other.

When the inner and outer poles 12 are not I exactly opposite theholdfasts 13 will be disshown). To assist in removing the box sections same are preferably made with a slight taper towards the bottom, say of about oneeighth of an inch.

A feed chute 20 is adapted to ride upon the cavity boxes and to pass the material into the mould at each side thereof. Any

These are made from I most. Thus, in order to properly support 'thehunion of two open ends I insert the wooden packing 24. The boxes are very simply made and the packing is especially useful in that by removing 1t after the ma- V terial hasfset, the springy sections of the box will tend inwardly thus facilitating the removal of the sections forming the boxes.

Inorder that the mould sides may be extended, the plates 9 are at one end fitted with two parallel extension plates 21. These platesa're preferably attached outslde the mould in order to leave the mould plates fiush'and continuous. Same will constitute a groovea'nd at the other end a tongue 22 is attached which extension or tongue takes into the groove. Both members are perforated at intervals say of three inches to receive pins 23 that hold the two plates together in line. These joints should 1f possible come opposite each other in the mould sides and the pin can then, if required, be made long enough to pass right through the mould to engage the perforations 1n the op osite joint. y

V t' wall angles, in order to bring the joints opposite, special mould plate lengths are necessary. -In Figure 8 these joints are not opposite and the wall at the corner is solid with the lug 11 outside the'o'uter section of the wall and within the inner section. The poles .12 in the lugs are supported across the corner-diagonally by the holdfast shown in dotted lines.

.may be set on a plane below its neighbor.

Thermould plates, when raised over a completed course, should preferably slightly overlap the top of such 'course when the fresh filling is-poured in, thus minimizing medially within the mould and steadied at the top in the recessed plate 17 attached to the yoke. The mould is extended to the re Y quired length by joining-up the specially tongued and grooved plates and the feed chute'is placed over the cavity-boxes. Then the material is fed through the chute into the mould which is strengthened and sup ported at the sides by the yokes 16.

Having now described my invention, what 'I claim as new and desire to secure by Let ters Patent is 1. In the construction of concrete walls or foundations, in combination, upright poles along the line of wall outside and supporting mould plates, holdfast plates on and between the poles, an elliptical opening in each plate end, a pivotally mounted clip with a semicircular recess on each end of the plate which is swung around and held to a pole to grip and steady the same.

2. In'the construction of hollow. concrete walls, cavity boxes in the mould for forming the wall said boxes being formed of a number of addable parts each made of a'metal sheet bent into deep U-shape form,'the,free

ends of one member telescoping with the bent end of the next and a rebated liner at the union of the free ends of two members whereby collapsible cavity boxes of varying lengths can be formed.

In testimony whereof I affix signature. I

I ROBERT WILSON. 

